Mower.



msfiizfiim'ss. PATENTED 1130.5, I905.

G. D. & J. H. JOHNSON.

MOWER.

APPLICATION FILED HOV. 25,1903.

UNITED STATES PATENT OFFICE.

GEORGE DOAN JOHNSON AND JAooB HENRYJOHNSOMOF HUNTSVILLE,

. CANADA.

MOWER.

Speeification'o f Letters Patent.

Patented. Dec. 5, 1905.

To aZZ whom it may concern:.

' Be itknown that we, GEORGE DoAN J oHN- trict of Muskoka, in theProvince of Ontario,

Canada, have invented certain new and use-- ful Improvements in Mowers,of which the following is a specification.

Our invention relates to improvements in mowers; and the object of theinvention is,

. first, to devise a simple,cheap, and durable for raising thefinger-bar which will relieve the driverof themachine to a great extentof the weight of the bar, in raisivrfig'l will be more convenient tooperate, and

same, and whic will also support'the major portion of the weight of thefinger-bar, so.

that it will rest lightly on the ground and thereby the draft bedecreased. To carry out these objects, we have constructed and arrangedour mower in detail as hereinafter moreparticularly explained.

- Figure 1 is a perspective view 'of the mower showing the partsinvolved in our invention, portions being broken away for the'sake ofclearness. Fig. 2 is a front elevation ofthe finger-bar, showing theconnection of the driving means to the knife-bar. I view showing aportion of the lifting lever and quadrant from the side opposite to thatshown in Fig. 1. Fig. 4is a perspective view of the cam. Fig. 5 is asection of the cam, showing the form of cam and roller.

In the drawings like characters of reference indicate correspondin partsin each figures A is the axle, and the wheels.

C is the swinging frame, through which the axle extends and which issubstantially triangular in form, extending at one side substantiallyparallelly with the lane of the wheel to the rear of the fingerar D.

L E is the tongue, whichis secured on a suitallow of the bar to fall soradually as not to rack the Fig. 3 is a' able bracket 6, pivotallyconnected tothe f .frame 0. soN, merchant, and JAooB HENRY J OHNSON,builder, of the town of Huntsville, in the disfin F is the shoe, towhich the inner end of the ger-bar is secured.

'c is a boss formed at the front apex of the frame 0, and c is apivot-pin which extends through the boss 0 and the bracket f at the rearof the shoe 4 v G is the knife-bar, having the usual heel g at the innerend.

H is a lever, which is pivoted on the bolt 72,, extendingupwardlyfromthe boss cion the frame 0.

C. is the rearward extension-frame of the frame 0, which extendsupwardly and is provided with the bosses 0 connected by the bar ctat thetop and the rib c at the bottom,

such bosses with the rib and bar forming a guide-and support for thelever H in its oscillating movement, as'will hereinafter apear. Theextension C has bearin -bosses in which is j ournaled one end of t ecrossshaft I.

Between the bearing-bosses C on the shaft I weprovide a cam-wheel J.

C 1s a rearward extension of the frame 0 at the op osite end, suchrearward extension carryin t ebearing-bosses Cithroughwhich the sha t Iextends. I K is a pinion on the end of the shaft I,

which meshes with the gear-wheel L, secured on the axle A.

Suitable means is, not necessary here to describe, are provided forthrowing the pinion in and out of gear.

The cam-wheel J is g of which are perpendicular to the bottom or' innerperiphery of the cam. The 0 pop v rovided with a serpentine wayj, theinwarly-extending apexes site corresponding recess is rounded an inclines inwardly at the bottom, so as to mit of easy movement of theroller h at the end of the lever, which, it will be noticed, is atapered roller with the shortest diameter at the inside. The roller 72,is journaled on a pin 72?, extending through the end of the lever.

It will be'notlced that the axis of the roller is at right angles to thelever and on a line passing through the cenper-- volves will have acontinuous sinuous movement without jar 'or break. of the continuity ofsuch movement, as such roller will continue to roll as it passes fromthe apex j of one side into the recess j of the opposite side, so as topass along that side. In other words, there will be no jum ing of theroller from one side to the other, ut a ontinuous rotation of the rolleras it follows the sinuosity of the cam.

The lower end of the lever II is bent and has a ball secured theretowhich fits in a socket formed by a forked end of a link M. Thus a balland socket connection m is formed at this point. The other end'of'thislink is bent and is connected to a pin g, which extends through the heelg of the knife-b ar G.

When the knife-bar is at the beginning of its stroke, the lever I-I,knife-bar, and link M are arranged so that the connection between thelever and link M is located to the inside of the fulcrum ofthe'finger-bar. By this arrangement when the stroke is made theconnection m travels to-a point to the opposite side of the fulcrumequidistant from it. It will be seen that when the knife is in theraised position there will be'mueh less motion-to it than if theconnection was located in any other position.

By reducing the motion when the knifebar is in the raised or inoperativeposition it reduces the wear on the knife-bar, yet at the same-timewhen'the knife-bar is in theoperative position the arrangement allows ofa maximum length of stroke to it.

It will now be understood that as the shaft I is caused to rotate thecam J imparts a reciprocating movement to the link M, and consequentlyto the knife-bar.

In order to raise the knife-bar, we'provide the following device: N isalever, which is pivoted on a pin it, extending through a bracket 0,attached to or forming part of the frame C. The bracket 0 is providedwith a quadrant 0 and the lever N with a suitable plunger N, designed tocoact with such bracket and operate in the usual manner. P is asupplemental lever, which is pivoted on an extension 0 of the bracket 0and provided at the upper end with a roller 10, which is held so as torun in a guideway n secured to or forming part of the lever N, by meansof a spiral spring Q, connected to the rear lower bent end of the leverP at one end and to an eye-bolt 1, extending through the bracket R,attached to'the tongue or pole.

Itwill be noticed that the point of connec tion of the spiral spring Qat the lower end of the lever P is beneath a line extending be tween theend of the bracket R and the upper portion of the frame C, supported onthe axle A, and it will consequently be understood that the tendency ofthe spring Q at all times is to exert an upward pull on the frontportion of the frame 0, and consequently on the finger-bar, therebyserving to cause such linger-bar to rest lightly on the ground,depending on the tension of the spring, thus materially assisting inreducing the draft.

The lower end of the lever N is connected by a link or red 2 to one orthe other of the holes 3 in the rear of the shoe F. It will thus beunderstood that not only does the spring Q serve the purposehereinbefore referred to, but also when the lever N is manipulated anddrawn in the direction indicated by arrow such spring Q pulling upon thelower end of the lever 'P will press the roller 1) against the lever N,thereby 'inaterially assisting the driver of the machine in raising thelingerbar. In fact, so much so does the spring serve this purpose thatwith but a slight 1quick exertion on the top of'the lever N the'nger-bar will be raised into the position shown in dotted lines inFigs. 1 and 2, and in which position it would be held'bythe plunger Ncoming in contact with'the rear of the quadrant 0.

Upon the plunger N 'and the lever 'N being released the spring Q,counterbalaneing the weight of the finger-bar, will serve toallow suchfinger-bar to pass gently back to the working position, which is animportant deiideratum, as it avoids the racking of such It will benoticed on reference to Fig. 2 that when the finger-baris raised intothe position shown in dotted lines such link M is raised to the verticalosition, and as the movement of the front ower end of the lever H is ahorizontal movement to the inside'of the pivot-pin 0, extending throughthe shoe of the finger-bar, such movement of thelever will notcommunicate any appreciable motion to the knife-bar, thereby serving toprevent any racking of the-machine, and consequently it will beunnecessary to throwout the gear. In fact, we only throw out thegear-drive when we are not using'the machine, but driving'longdistances.

From this description it will be seen that we have produced a mower-withaless number of parts than those at presentin use and less liable towear and tear,lighter, more durable, and in which all the working partsare perfectly protected fromobstructions in the field, and in which thedraft is reduced to a minimum.

What we claim as our invention is 1. In a mower, the combination of'thefinger-b ar, the knife-bar arranged. to reciprocate on the finger-b ar,a frame on which the fingerbar is pivoted, a lever pivoted intermediateits ends to the frame at right angles to the knife-bar, means at one endof sald lever for oscillating the same horizontally, a link M having aball-and-soeket connection with-the lower end ofsaid lever, said link Mhaving a bent end which is connected with the knife bar so as tomovementw bar near the axis of thepivot of thefingergl've the knife {barreciprocating en the lever is reciprocated and means for raising the'fingerbar with the knife-bar into vertical position whereby the pplintof connection of the link M with'the ife-bar will be carried above theplane of movement of the lever so that the lower end of the link M willoscillate while the upper end is substantially stationary, substantlallyas described.

2. In a mower, the combination with the wheels, swingin frame andfinger-bar pivotally connecte to the same, and a lifting-e lever pivotedon the swinging frame, and the link connecting the bottom end of thelever to the finger-bar, of means ooacting with the lever for reducingthe weight of the fingerbar as it is being raised as and for the purposes ecified.

3. n a mower, the combination with the wheels, swinging'frame andfinger-bar pivotally' connected to the same, and a liftinglever pivotedon the swinging frame, and the link connecting the bottom end of thelever 'ver to the pose spee' ed.

to the finger-bar, of asupplemental lever pivoted on the swinging frameand having one end designed to come in contact with the lever, andaspiral spring connecting the opposite end of the lever to the pole ortongue as and for the purpose specified.

4. In a mower, the combination with the wheels, swinging frame andfinger-bar pivotally connected to the same, and a liftlnglever pivotedon the swinging frame, and the link connecting the bottom end of thelever to the finger-bar, aguide on said lever of a supplemental leverpivoted on the swinging GEORGE DOAN JOHNSON. JACOB HENRY JOHNSON:

I Witnesses;

D. M. GRANT, J. R. SooTT.

